Railway fog signaling apparatus.



Patented Dec. 30, I902.

J. H. PLEASANCE. RAILWAY FOG SIGNALING APPARATUS.

(Application filed May 81, 1902.)

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J. H. PLEASANCE. RAILWAY FOG SIGNALING APPARATUS.

(Application filed May 31, 1902.)

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(No Model.)

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J. H. PLEASANCE.

RAILWAY FOG SIGNALING APPARATUS.

(Application filed May BL 1902.:

No Model) 3 Sheets-Sheet 3.

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lhyrrnn STAT S PATENT OFFICE.

JOSEPH HERBERT PLEASANOE, OF EAST HAM, ENGLAND.

RAlLWAY FOG SIGNALING APPARATUS.

SEEGIFIUATION forming part of Letters Patent No. 717,020, dated December1902- Application filed May 31, 1902. Serial No. 109,722. (No model.)

T0 all whom, it 'mag concern:

Be it known that LJosnPH HERBERT PLEAS- ANCE, a subject of the King ofGreat Britain, residing at East Ham, in the county of Essex, England,have invented a new and useful Improvement in Railway Fog SignalingApparatus, (for which I have obtained a patent in Great Britain, No.8,647, hearing date April 14, 1902,) of which the following is a speciflcation.

This invention relates to improvements in or connected with railway fogsignaling apparatus, and has for its object to provide a comparativelyinexpensive apparatus which enables a Signalman or other operative toacquaint the driver of an engine with the state of the line ahead infoggy weather or at other times.

In order that this my said invention may be the more readily understoodand carried into practical effect, reference is hereby made to theaccompanying sheet of illustrative drawings, wherein- Figure 1 is adiagraminatical plan view of a permanent way with that part of myapparatus which is controlled by the signalman in its position toindicate danger. Fig. 2 is a side elevational view thereof. Fig. 3 is aside elevational view of the operating apparatus carried by the engine,shown independently. Fig. 4.- is afrontelevational view thereof, whileFig. 5 is a side elevational view of a portion of an engine with myoperative apparatus applied thereto.

Referring to the drawings, in which like letters of reference indicatecorresponding parts wherever occurring throughout all the figures, (trepresents the rails of a permanent way, which rails are preferablycarried upon sleepers I) in the ordinary manner.

Rigidly attached to one of the sleepers I) a convenient distance fromthe signal-post c I arrange transversely of the rails a bar d, the ends01 of which are arranged to project vertically to a convenient distance,theupper ends of these projecting ends being preferably provided withloosely-mounted rollers (1 A short distance farther on in the directionof traveling I arrange in guides g, carried by another of the sleepersb, a bar 6, having vertical projections 6', provided with rollers e andbeing substantially similar in construction to the bar 61 beforementioned. One of the ends of this bar 6 is, by means of a wire, chain,or other flexible connection a and pulleys e associated with anoperatinglever e in the signalrcabin. Attached at one end to the bar 6aforesaid at a conven ient point and at the other end to one of therails or to some other rigid part of the permanent way I arrange aspring e The end of the bar e opposite to that to which the flexibleconnection 6 is attached is preferably'extended slightly and arranged toslide in a socket e At a convenient distance farther on in the directionof travel and preferably a short distance from the ordinary sign'al-postc I arrange a second sliding bar f under the control of the signalman orother operative, which barfis of precisely similar construction to thebare aforesaid and is pro vided withexactlysimilar fittings andconnections.

Carried in a convenient position upon the engine, preferably adjacent tothe enginecab, I arrange a bracket 72, to which a lever iis pivoted in aconvenient position. Two preferably india-rubber springs j, havinglooped ends j, are each attached at one of their ends to the upper end hof the said pivoted lever 1', while the other looped ends f of,

such springs are attached either to vertical projections of the bracketh or to some other fixed point. The lower end i? of the lever t is bentupwardly to provide for the ready attachment of an extension 71 Thisextension "6 is so disposed that when the engine upon which it iscarried passes the bar d it will strike against one of the verticalprojecting ends 61 thereof and also one of the vertical projections uponeither the bar 6 or the bar f, whichever is in its operative position,as will hereinafter more fully appear.

In operation as the engine carrying the pivoted lever 41 aforesaidpasses the rigid bar d the lower extension i thereof comes in contactwhen passing with one of the vertical extensions d thereof, and consequentlythe said lever i is deflected from its vertical" position inopposition to the springs j. This causes the upper end thereof to pullupon a flexible connection attached between it and the lever of a hellit. Immediately the lever 2' and its extension i passes the obstructingends (1 of the bar the said lever regains its normal position under theinfluence of the springs j and the hell it is rung, the lever thereofflying back to its normal position. This notifies the engine-driver thathe must slow u-p unless the bell 7r rings again immediately. This willnot occur when the apparatus is set at danger, as shown, as thesliding'bar 6 will have been drawn over by the signalmen in oppositionto the spring 6 and the vertical projection thereon will not then lie inthe track of the lower extension i of the lever i. The engine-driverwill consequently proceed at a slow speed toward the signal-post c, andjust before reaching it the engine will pass the bar fand the lowerextension i of the lever a. will contact with one of the vertical.extensions f thereon, thus ringing the bell k on the engine in themanner before described. This denotes to the engine-driver his duty toimmediately stop. The driver must not now proceed farther until signaledto do so by the Signalman. This is effected by the ringing of anindependent bell Z under the control of the signalman, arranged in aconvenient position close at hand and capable of being operated,preferably, by means of a lever Z in the signal-cabin, which lever isconnected with the bell, preferably by means of connection Z, working inconjunction with pulleys Z It willv be understood that if the line isclear the bar e will be in its operative position and the bar f will bedrawn over by the signalman through the medium of connection f pulleys fand levers f in opposition to the spring f to a position with itsvertical projectionsf, provided with rollers f out of the track of thelower extension i of the lever 't' aforesaid. It will also be understoodthat the rollers d 6 and f are provided to reduce friction as much aspossible.

The provision of vertical obstructing projections in correspondingpositions at each side of the rails insures the operation of the deviceshould the engine be traveling back to front,or,if desirable,pivotedbell-operating levers may be arranged each side of the engine.

The sockets e and f are provided to limit the travel of the bars 6 and funder the influence of their springs e and f to insure the verticalprojections e and f always lying in the track of the lower extension 2'of the lever '11 when in their operative positions.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. Theimprovementsin railway fog signaling apparatus consisting of apivoted lever having a detachable lower extension said pivoted leverbeing carried by a bracket carried upon an engine and being heldnormally in a vertical position by india-rubber springs attached betweenits upper end and fixed points on each side thereof, said upper endbeing connected with the lever of a bell carried by the engine; incombination with three obstructions arranged at intervals in thepermanent way one of the said obstructions being rigidly attached to oneof the sleepers carrying the rails, the other two being capable ofwithdrawal from the track of the operating-lever carried by the engine;and an independent bell in a suitable position under the control of thesignalman, substantially as and for the purposes hereinbefore describedand shown.

2. In railway fog signaling apparatus the combination with a pivotedbell-operating lever carried by an engine; of transverse sliding barsarranged in guides such transverse bars having vertical projections ator near their ends, the upper ends of such vertical projections beingprovided with looselymounted rollers, such transverse bars being at oneend connected by suitable means with an operating-lever, their otherends being provided with extensions arranged to move in sockets, thetravel of such transverse bars, under theinfluence ofcontrolling-springs, being limited by such sockets substantially as andfor the purposes hereinbefore described and shown.

JOSEPH HERBERT PLEASANCE.

Witnesses:

DAVID WISEMAN, SYDNEY HOOPER.

